80 mm = 3.1496 in
Worked example
80 ÷ 25.4 = 3.1496 inches. On a ruler marked in sixteenths, that is about 3 1/8″; in thirty-seconds, 3 5/32″; in sixty-fourths, 3 5/32″. The nearest 1/16 mark (3 1/8″ = 79.38 mm) is off by 0.62 mm.
80 mm is also 8 cm and 0.262 feet.
| Millimeters | Inches | Nearest 1/16 |
|---|---|---|
| 75 mm | 2.9528 | 2 15/16″ |
| 76 mm | 2.9921 | 3″ |
| 77 mm | 3.0315 | 3 1/16″ |
| 78 mm | 3.0709 | 3 1/16″ |
| 79 mm | 3.1102 | 3 1/8″ |
| 80 mm | 3.1496 | 3 1/8″ |
| 81 mm | 3.189 | 3 3/16″ |
| 82 mm | 3.2283 | 3 1/4″ |
| 83 mm | 3.2677 | 3 1/4″ |
| 84 mm | 3.3071 | 3 5/16″ |
| 85 mm | 3.3465 | 3 3/8″ |
Frequently asked questions
How many inches is 80 mm?
3.1496 inches, about 3 1/8″.
What fraction of an inch is 80 mm?
About 3 5/32″ to the nearest 1/32.